class AddDimenForExplanation < ActiveRecord::Migration
  def self.up
  add_column :explanations , :dimen_id , :integer
  add_column :surveys , :show_expl ,:boolean ,:default => false
  end

  def self.down
  remove_column :explanations , :dimen_id
  remove_column  :surveys , :show_expl 
  end
end
